Battle of the weird

Uncle Grandpa is said to have absorbed much of Mr. Mxyzptlk's powers to confront Bill Cipher and stop the Weirdmaggedon. But after canceling the Weirdmaggedon, this only made the situation much worse since by fighting with all his powers, he triggered a series of apocalyptic events until causing a Crisis that would affect all of reality with anti-equations that would violate all the laws of physics until rebuilding reality into a cosmic nightmare.